Ammonia → HCID 64468952, compound

Participants

Reaction Conditions

Reaction Steps

A solution of EXAMPLE 145A (4.6 g) in concentrated H2SO4 (9 mL) was heated to 70° C. for 20 minutes. The reaction mixture was cooled to about 0° C. in an ice bath and diluted with water. The pH of the solution was adjusted to pH 7-8 by addition of concentrated aqueous ammonia solution. The aqueous layer was extracted with methylene chloride (2×50 mL). The combined organic layers were washed with water (1×20 mL), dried over MgSO4, filtered, and concentrated to give the title compound, which was used in the next step without further purification.

Provenance & Evidence